This issue has variants.
Distributed to newstands in April 1964. This issue includes 10 pages of paid advertisements.
Distribution date from Joseph Marek's Marvel Comics Group history website.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Dick Ayers. Letters credit from George Olshevsky's Marvel Comics Index.
Continues from last issue. The Mandarin next appears in issue #61 (January 1965).
The first time we learn Pepper's real name: Virginia Potts.
Continues in next issue. This page includes a teaser for the next issue: "Next Ish: 'Iron Man Meets the Unicorn!'"